Traditional wireless networks including wireless sensor networks working in an unlicensed
spectrum band are suffered from uncontrolled interference, as this unlicensed spectrum …

This paper investigates the spectrum sensing issues in the cognitive radio (CR) networks of
opportunistic unlicensed spectrum access. The cognitive radios can perform a …

The availability of radio spectrum is limited. The demand for high data transmission requires
the increase in the spectrum which over burdens the available frequency spectrum because …

Cognitive radio is an intelligent radio wireless communication technology in order to
increase the spectrum efficiency. In this paper one of the most important cognitive radio task …

Cognitive radio (CR) is regarded as an emerging technology to utilize the scarce RF (radio
frequency) spectrum in opportunistic manner to increase the spectrum efficiency. However …

Cognitive Radio (CR) technology is developed to overcome the spectrum scarcity due to
rapid development in wireless networks. Both licensed and unlicensed users can utilize the …

Most frequency spectrum bands are licensed to certain services to avoid the interference
between various networks but measurements of spectrum occupancy show that only …

With the increase in utilization of portable devices and ever-growing demand for greater
data rates in wireless transmission, an increasing demand for spectrum channels was …

There is a huge demand of spectrum now a days, but in conventional system radio spectrum
is very scared resource. To avoid interference and improve spectrum saturation, Cognitive …

This paper focuses on the spectrum sensing issues in the unslotted cognitive radio networks
with wireless fading channels. To overcome the energy-inefficiency problem of the existing …